private var loader:URLLoader;...private function init():void{   loader = new URLLoader;   req=URLRequest = new URLRequest("1.txt");  loader.load(req);  loader.addEventListener(Event.COMPLETE,oncomlete);         }private function oncomplete(e:Event):void{  var str:String=loader.data;  trace("src///////");  str=secret(str);  trace("secret///////\n"+str);  str=unsecret(str);  trace("unsecret//////////////\n"+str);      }private var add_key:Array=[800,650,400,525,100,250]//间距大于122(z的unicode值)private var range:Array=[65,91,97,123]//65,70,75,91,97,100,123
private var xor_key:Array=[0xaa,0xbb]private function secret(src:String):String{ var res:String="";  var i:int,len:int,unicode:int; len=src.lengthfor(i=0;i<len;i++){    unicode=str.charCodeAt(i);var idx=index(unicode);res+=String.fromCharCode(xor(add_key[idx]+unicode+random(i)))}       return res;}iprivate function xor(v:int):int{  var i:int,len:int; len=xor_key.lengthfor(i=0;i<len;i++){    v^=xor_key[i];}return v;}private function random(i:int):int{  swicth(i%4){case 0:if(i%9==0)return((1-Math.sin(i))*(i%100)>>0);elsereturn((1-Math.sin(i))*(i%200)>>0);case 1:return ((1-Math.cos(i))*(i%300)>>0);case 2:return ((1-Math.cos(i)*Math.sin(i))*(i%400)>>0);case 3if(i%3==0)return((1-Math.sin(i)*Math.cos(i)*Math.cos(i))*(i%500)>>0);elsereturn((1-Math.sin(i)*Math.cos(i)*Math.cos(i))*(i%600)>>0);}
return 1;  }private function index(u:int):int{ if(u>64&&u<91||u>96&&u<123){ var i:int,len:int;len=range.length-1;for(i=0;i<len;i++){    if(u>=range[i]&&u<range[i+1])    break;}return i}elsereturn 5}private function index2(u:int):int{  var i:int,len:int;len=add_key.length-1;for(i=0;i<len;i++){if(u>=add_key[i]&&u<=add_key[i]+123)break;}  return u-add_key[i];}private function unsecret(src:String):String{var res:String="";var i:int,len:int;var u:int;len=src.length;for(i=0;i<len;i++){    u=xor(src.charCodeAt(i)-random(i));    u=index2(u);    res+=String.formCharCode(u);}return res;}